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A general model of starting point bias in double-bounded dichotomous contingent valuation surveys. (English) Zbl 1090.91069

Summary: This paper develops a general model that addresses the starting point bias in the dichotomous choice evaluation data by incorporating both the anchoring effect and yea-saying bias. The model is applied to a contingent valuation study that evaluated the health benefits of air quality improvement in three major metropolitan areas in Taiwan. The empirical evidence shows a strong anchoring effect but an insignificant yea-saying bias. The results show a serious understated willingness to pay if the biases in anchoring and yea-saying are not controlled.

MSC:

91B76 Environmental economics (natural resource models, harvesting, pollution, etc.)
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